INTERESTING IRS TIDBIT

According to Pro Publica, the recipient of one of today's Limbaugh rants, social welfare groups don't HAVE to apply to the IRS for a tax exempt status:

Social welfare nonprofits are not required to apply to the IRS to operate. Many politically active new conservative groups apply anyway. Getting IRS approval can help with donations and help insulate groups from further scrutiny. Many politically active new liberal nonprofits have not applied.